|Publication number||US20050039823 A1|
|Application number||US 10/642,830|
|Publication date||Feb 24, 2005|
|Filing date||Aug 19, 2003|
|Priority date||Aug 19, 2003|
|Also published as||US6945291|
|Publication number||10642830, 642830, US 2005/0039823 A1, US 2005/039823 A1, US 20050039823 A1, US 20050039823A1, US 2005039823 A1, US 2005039823A1, US-A1-20050039823, US-A1-2005039823, US2005/0039823A1, US2005/039823A1, US20050039823 A1, US20050039823A1, US2005039823 A1, US2005039823A1|
|Inventors||Bor Yann Chuang|
|Original Assignee||Bor Yann Chuang|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (5), Classifications (9), Legal Events (4)|
|External Links: USPTO, USPTO Assignment, Espacenet|
1. Field of the Invention
This invention relates, to a device for eliminating a gap of the threaded rod of a plane machine, particularly to one able to stabilize the planing table of a plane machine during planing so as to carry out planing smoothly and precisely and elevate the quality of planing.
2. Description of the Prior Art A conventional plane machine, as shown in
However, as shown in
The objective of the invention is to offer a device for eliminating a gap of the threaded rod of a planing machine, provided with four gap nuts respectively screwed with four threaded rods. Four springs respectively fitted around the four threaded rods and positioned on the four backlash nuts are pressed to produce a pushing-up force to move a threaded rod base upward and closely contact with the four threaded rods to eliminate the gap therebetween, able to stabilize the planing table and the planing knife thereon to carry out planing smoothly and precisely and elevate the quality of planing.
This invention will be better understood by referring to the accompanying drawings, wherein:
A preferred embodiment of a device for eliminating a gap of the threaded rod of a plane machine in the present invention, as shown in FIGS. 4 to 6, includes a bottom base 20, four threaded rods 30, a planing table 40 and four gap nuts 42 combined together.
The bottom base 20 has its four corners respectively fixed with the threaded rod 30 extending upward and respectively screwed with the four threaded rod bases 41 secured at the four corners of the planing table 40, rendering the planing table 40 adjustable to move up and down.
The four gap nuts 42 are respectively screwed with the four threaded rods 30 under the threaded rod bases 41. Four springs 43 are respectively fitted between the four gap nuts 42 and the four threaded rod bases 41, able to be pressed tight by the gap nuts 42. The gap nuts 42 and the threaded rod bases 41 are positioned together by bolts to prevent the gap nuts 42 from loosening and turning around.
In addition, each threaded rod base 41 and each backlash nut 42 respectively has its outer circumferential edge formed with an annular spring holder 411 and 421 protruding downward and upward, and the annular spring holder 411 and 421 respectively have their surface bored with a spring receiving groove 4111 and 4211 for receiving the opposite ends of the spring 43. Further, the spring holder 411 of the threaded rod base 41 has two locking threaded holes 412 respectively bored in the opposite sides of its circumferential surface, and the spring holder 421 of the gap nut 42 has its circumferential surface bored with positioning holes 422 preset in number, with any two of the positioning holes 422 able to face the two locking threaded holes 412. Two locking bolts 44 are respectively screwed in both the positioning holes 422 and the locking threaded holes 412 to combined the gap nut 42 together with the threaded rod base 41 so as to prevent the gap nut 42 from loosening and turning around when the threaded rod 30 is turned to move the planing table 40 up and down.
The device for eliminating a gap of the threaded rod of a plane machine in the present invention, as shown in
Besides, after the four gap nuts 42 are screwed in position and the four springs 43 are pressed to produce a proper pushing-up force, the gap nuts 42 are locked in position with the threaded rod bases 41 by means of two bolts 44 to prevent the gap nuts 42 from loosening and turning around. As can be noted from the above description, the pushing-up force of the springs 43 can push the threaded rod base 41 and the planing table 40 move upward to eliminate the gap (c) between the lower surface of the outer threads 31 of the threaded rod 30 and the upper surface of inner threads 413 of the threaded rod base 41. Thus, the planing table 40 can be lifted upward and positioned closely on the four threaded rods 30; therefore when the plane machine perform planing of a wood material and the wood material produces a reverse pushing force to push against the planing knife, the planing table 40 cannot be moved upward by such a reverse pushing force, no matter how huge it is, capable to stabilize the planing table 40 in a planing process and let the wood material planed smoothly and precisely. Additionally, even though the threads of the threaded rod 30 and the threaded rod base 41 become worn off to form a gap therebetween due to repeated screwing, the gap still can be eliminated by the device of this invention, able to maintain excellent quality of planing.
While the preferred embodiment of the invention has been described above, it will be recognized and understood that various modifications may be made therein and the appended claims are intended to cover all such modifications that may fall within the spirit and scope of the invention.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US5725035 *||Jun 5, 1996||Mar 10, 1998||Black & Decker Inc.||Apparatus for adjusting the relative positions of two components of a power tool|
|US5816303 *||Jul 15, 1997||Oct 6, 1998||Black & Decker Inc.||Method and apparatus for adjusting the relative positions of two components of a power tool|
|US5957174 *||Jul 2, 1998||Sep 28, 1999||Black & Decker Inc.||Apparatus for adjusting the relative positions of two components of a power tool|
|US6279628 *||Oct 13, 2000||Aug 28, 2001||P & F Brother Industrial Corporation||Wood planing machine with improvement relating to a thickness adjustment device|
|US6481474 *||Mar 13, 2002||Nov 19, 2002||Juei-Seng Liao||Wood planing machine with a wood shaving collecting mechanism|
|U.S. Classification||144/114.1, 144/117.1|
|International Classification||B27C1/04, B27C1/14|
|Cooperative Classification||B27C1/14, B27C1/04, Y10T409/308624|
|European Classification||B27C1/14, B27C1/04|
|Dec 12, 2008||FPAY||Fee payment|
Year of fee payment: 4
|May 3, 2013||REMI||Maintenance fee reminder mailed|
|Sep 20, 2013||LAPS||Lapse for failure to pay maintenance fees|
|Nov 12, 2013||FP||Expired due to failure to pay maintenance fee|
Effective date: 20130920